A wind instrument bell includes a bell body and a ring. The bell body has a cylindrical shape, is configured to be connected to a wind instrument body, and has an outer circumferential surface having a recessed groove extending in a circumferential direction of the outer circumferential surface. The ring has a C shape, has a first end and a second end being separated from each other, and is accommodated in the recessed groove in a state of being deformed so that the first and second ends separate from each other.